G.  Bentham, ?CIII. Burmanniaceae?, in Niger Flora, or an enumeration of the plants of Western tropical Africa, W. J.  Hooker, Ed. London: Hippolyte Bailliere Publisher, 1849, pp. 528 - 529.

W. J.  Hooker, Flora Boreali-Americana, Vol. 2. 1840, p.  - 48.

W. J.  Hooker, ?Apteria orobanchoides?, in Icon. Pl., vol. 3, London: Longman, Orme, Brown, Green, and Longmans, 1840, p. t. 254.

W. J.  Hooker, ?Vohiria?, Bot. Misc., vol. 1, pp. 46 - 47, t.25, 1830.